Use TMemoryStream to store data in a dynamic memory buffer that is enhanced with file-like access capabilities. TMemoryStream provides the general I/O capabilities of a stream object while introducing methods and properties to manage a dynamic memory buffer.

Memory streams are useful as intermediary objects that can hold information as well as read it from or write it to another storage medium. They provide a useful format for comparing the contents of streams, or for manipulating data that is stored in a less accessible medium.